City-data.com crime rate counts serious crimes and violent crime more heavily. It adjusts for the number of visitors and daily workers commuting into cities.

According to our research of South Dakota and other state lists there were 6 registered sex offenders living in Rapid City, South Dakota as of August 02, 2015.The ratio of number of residents in Rapid City to the number of sex offenders is 11,642 to 1.The number of registered sex offenders compared to the number of residents in this city is a lot smaller than the state average.

See how dangerous Rapid City, SD is compared to nearest cities:(Note: Higher means more crime)